Question 291 · LDEK · Impressions and impression materials
The impressions performed with zinc oxide-eugenol and silicon impression materials of condensing type polymerization, should be disinfected with glutaric aldehyde solution in a following way:
- A. immersed in the solution for 10 minutes, followed by rinsing with distilled water.
- B. immersed in the solution for 10 minutes, followed by rinsing with distilled water and covered with damp gauze for 3 minutes.
- C. immersed in the solution, rinsed with distilled water, again immersed in solution and covered with damp gauze for 3 minutes.
- D. immersed in the solution, rinsed with distilled water, again immersed in solution and covered with damp gauze for 10 minutes.
- E. placed in in the solution for an hour, rinsed with distilled water, placed again in the solution for 10 hours, rinsed with distilled water.
Hint
Consider whether these materials absorb water or dry out; dimensionally stable materials need only a simple immersion protocol.
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